Funding for this research was provided by:
Helse Stavanger HF
Text and Data Mining valid from 2018-05-03
Received: 7 July 2017
Accepted: 22 April 2018
First Online: 3 May 2018
Ethics approval and consent to participate
: The study is approved by the Regional Committee for Medicine and Health Research Ethics in Norway (2015/1488). Participation in the study is based on voluntary recruitment and written informed consent. The project has also been approved by the data protection officers at the two case hospitals.
: The authors declare that they have no competing interests.
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